"Shout Out to My Ex" received its debut performance on the second results show of
The X Factor in 2016, in which the group started in a car outside its recording studios, flanked by female cheerleaders in T-shirts with the names of male and female exes on them, Two days later, they performed the song on the
Radio 1 Teen Awards. They also made an appearance and performed the single on the Norwegian program
Senkveld on November 3. On November 13, they gave a performance on the Australian TV show,
Sunrise, and performed the next day for the semi-final week of
The X Factor Australia. Four days later, they performed the single on
''BBC's Children In Need, and two days later gave an acoustic performance on
Sunday Brunch. Then, they gave a performance on The X Factor Italy on 24 November. On December 1, the group took to the LOS40 Music Awards stage and performed their hit single. They performed the song on The Today Show'' in 2016, and later again in 2017. An unplugged performance was delivered for
Paper Magazine in January 2017. They also performed the song acoustically on
iHeart Radio's Honda Stage on 2 February 2017. In March 2017, the group performed a
mashup of "Shout Out to My Ex" and "
Touch" on the
Nickelodeon Kids' Choice Awards, where they altered the lyrics of "Touch" to make it more kid-friendly. On 22 February, Little Mix kicked off the
Brit Awards by giving a fiery performance of the song. The members, who were carried to the stage on huge silver platforms, all had blonde wigs and wore futuristic black and silver outfits, while the stage was lit in a hot-pink color. They gave another performance of the song on the
Radio 1 Teen Awards in 2018. In August 2020, Little Mix held a virtual concert called Little Mix Uncancelled where they performed some of their hits, including "Shout Out to My Ex". Over the years, the group has performed the song in many
music festivals, like the
Jingle Bell Ball in 2016 and 2018, the
Summertime Ball in 2017, the
Fusion Festival in 2017 and 2019, the
Big Weekend festival in 2017 and 2019, and the Popspring festival in 2018. Little Mix has also included "Shout Out to My Ex" on every single tour
set list since its release — the
Dangerous Woman Tour in 2017, where the group supported
Ariana Grande in
North America; the Summer Shout Out Tour in 2017, where the song served as the final number;
The Glory Days Tour (2017–2018), where they performed the song as an
encore while wearing black t-shirts with the word "Ex" written in silver glitter; the
Summer Hits Tour in 2018, where it was the last song before the encore; the
LM5 Tour in 2019; and
The Confetti Tour in 2022, where it was the first song on the set list. Since the tour was held after Nelson's departure from the group in 2020, Thirlwall covered Nelson's verse. ==Accolades==